PVR Cinemas — Movie ticket booking

PVR Cinemas, Chennai

Have tried umpteen number of times of times to book for tickets today but everytime getting a message "bad transaction". They know Sundays are crowded, and a high demand for movies are there. Why didn't they offer multiple shows instead of blocking the show for only screen. This is very inconvenient because everyone will book tickets at same time for the same show. If multiple shows on Sunday's are arranged, people can book at their leisure.
Every other person is booking tickets but me.
Very bad planning of shows especially on Sundays.